Study of Response of Zinc and Boron Micronutrients on Growth Parameters of White Sesame (Sesamum indicum L.

A field experiment was conducted during the Kharif season of 2025 at the Agricultural Farm of Himalayan University, Jollang, Itanagar, Arunachal Pradesh, to evaluate the effect of zinc and boron micronutrients on the growth, yield, and quality of white sesame (Sesamum indicum L.). The experiment was laid out in a Randomized Block Design (RBD) with seven treatments and three replications. The treatments included soil and foliar applications of zinc and boron at different levels along with an untreated control. The results revealed significant variations among treatments for growth parameters such as plant height, leaf length, number of leaves, branches per plant, fresh weight, and dry weight. Among the treatments, the combined application of zinc through soil (2 kg ha⁻¹) and foliar spray (3 kg ha⁻¹) (T₃) recorded the highest plant height (78.1 cm), leaf length (13.93 cm), number of leaves per plant (28), branches per plant (5.49), fresh weight (13.93 g), and dry weight (24.10 g) at 90 DAS. In contrast, the control treatment recorded the lowest values for most growth attributes. The study concluded that integrated application of zinc and boron, particularly zinc applied through both soil and foliar methods, significantly improved the growth and productivity of white sesame under the agro-climatic conditions of Arunachal Pradesh.

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